Stationary magazine loom



March 25, 19417. J, ST ER 2,418,101

STATIONARY MAGAZINE LOOM Filed Sept. 2, 1943 5 Sheets-Sheet l INVENTOR.

M EMWMW March 25, 1947. J. STUER STATIONARY MAGAZINE LOOM Filed Sept. 2, 1945 5 Sheets-Sheet 2 FIG. 7

FIG. IO

March 25, 1947. s TuER 2,418,101

I STATIONARY MAGAZINE LOOM 5 Sheets-Sheet 5 Filed Sept. 2, 1943 I 2 INQVENTOR.

March 25, 1947. J STUER 2,418,101

STATIONARY MAGAZINE LOQM Filed Sept. 2, 1943 5 Sheets-Sheet 4 7-1 FIGZS INVENTOR.

March 25, 1947. J. STUER STATIONARY MAGAZINE LOOM Filed Sept. 2, 1943 5 Sheets-Sheet 5 aas 0 e X 0 m a 7 It 3 m 8 I 1 M 7 m fimuvm F. MM s hm a w n? 2 06 6 8 8 a u S II lllll w va f v 4 9 A 9 W W 3 v 1 1 A! 8 m G M 0 M Ii i! q 2.- l I l L I I m4 9 a A 4 w. Q lI-Ell-. 4 M w. 3 m5 .4 m M Q M F mid Patented Mar. 25, 1947 UNITED STATES PATENT OFFICE STATIONARY MAGAZINE LOOM Joseph Stuer, Lawrence, Mass.

Application September 2, 19%, Serial No. 599,947

12 Claims.

This invention relates to automatic looms for weaving. In such looms there is a box with a single cell for a shuttle or several cells one over the other in a shifting shuttle box, there being a passage in the bottom of each box through which a spent bobbin can be forced by a fresh bobbin which is pushed into its place by what is known as a transfer hammer.

Just above the top box cell, there is some device to hold a full bobbin and over this there is normally the head of a transfer hammer which hammer is pivoted to the loom frame and has one arm carrying the head and another arm carrying what is known as a dog. On the front of the lay is a bunter and the dog is pivoted to the second arm of the transfer hammer in such a way that it is normally out of the way of the hunter but, after indication, it is moved into the path of the hunter with the result that the hunter forces the dog and the transfer hammer in such a way that the transfer hammer head forces a full bobbin out of its holder down into the shuttle thus ejecting the spent bobbin.

There are several kinds of magazines or batteries. There is one type like Barrell, No. 1,321,276 of November 11,1919, in which bobbins come down by gravit through a single chute into some kind of a holder under the hammer head so that when one full bobbin is forced into the shuttle and the hammer head is withdrawn, usually upward, another bobbin slips into place immediately.

There is another type known as the battery type in which there is a rotary, revoluble frame which holds a circle of bobbins. In this type after the hammer has pushed a full bobbin out of its place and into a shuttle, by suitable mechanism, the circle or battery is turned one space to bring another full bobbin into position for the next transfer. These devices have their place in certain types of weaving but for many types the most satisfactory magazine is one in which there are two or more stacks of bobbins in verti guides or runways, all rising from guides diverging from a position just over what are usually called giveways. These givewa s are positioned centrally under the bottoms of the vertlcal stacks and hold a single bobbin over a shuttle under a transfer hammer head. There are number of different types of release mechanisms whereby a single bobbin at the bottom of the vertical stack of each runway is released as by a cradle rolls or slides down into the giveways ready to be transferred. Such a stationary vertical magazine has the advantage of containing a greater number of bobbins than 2 a single chute or a battery and in fancy looms the bobbins in the different runways or slides can be of different colors or of different quality.

A well known method of operating these multiple stack magazines is shown in the patent to Ryon, No. 1,030,748, June 25, 1912, by means of vertical slides each having two noses and each connected to a cradle which receives a bobbin from the bottom of a stack and then discharging that bobbin so that it can roll down into the giveways all in a well known manner.

Another method is shown by Joseph Stuer in his Patent No. 2,259,843 of October 21, 1941.

With the type of loom like Ryon, on indication, a bobbin at the bottom of a stack is received in a cradle and later, the color indication causes to be released or thrown into the giveways a short time before the transfer hammer head comes down on it as the lay is moving from bottom to front center.

In the Ryon and in many other constructions, there is an interval of about three quarters of a pick between the time when the cradle starts to tip out its bobbin and the time when that bobbin reaches and settles in the giveways in the right position to be engaged by the transfer hammer head.

If the cradle throws the bobbin, it is apt to bounce or if the bobbin merely drops the time is barely enough with very careful adjustment to permit the new, full bobbin to settle into its correct position in the giveways.

With my device, there is no problem because the bobbin is positioned in the giveways after transfer.

The term transfer has been used to indicate not only the forcing of a full bobbin into the shuttle to replace the old or spent bobbin but also to cover the repositioning of another full bobbin in the place vacated by the full bobbin now in a shuttle.

The usual sequence has been indication, dropping the bobbin into giveways and transfer or to abbreviate, I. D. T. with a pause until the next sequence of I. D. T.-I. D. T.

With my construction the sequence is changed follows:

indication, transfer, dropping or I. T. D. with pause of greater or less length and again I. D.-I. T. D.

There are clearly at least two separate processes. One is getting a new full bobbin in place to be forced. into a shuttle and the other is the moving or forcing of that full bobbin into the shuttle, With a magazine loom having vertical stacks of bobbins, there is normally no bobbin in the giveways but, after indication, devices are started which move a cradle to receive a bobbin and then, at some later time, the pattern mechanism causes that bobbin to be released by its cradle to be dropped or thrown so as to go into the giveways. At about this same time, the same or some devices also set the dog of the transfer hammer in position for forcing that bobbin into the shuttle.

Many attempts have been made to feel for a nearly spent bobbin in a shuttle and to replace it quickly. These attempts follow the sequence of feeling, moving a bobbin from a stack into a cradle and then into the giveways and at the same time setting the transfer dog for transfer. The time required for the bobbin to leave a cradle and to come to rest in the giveways is about the time required to set the dog for transfer and it is difficult to adjust the parts to function perfectly, especially as the b bin tends to bounce when settling into correct position in the giveways.

The peculiar new feature of this device is that feeling or indication sets the dog and the transfer with a full bobbin in the giveways, so that transfer can be made in less than a half pick, and the dropping, or throwing or moving another full bobbin into the giveways after transfer.

' There is therefore a bobbin normally and quietly in place in the giveways so that the only problem is setting the transfer dog of the transfer hammer as quickly as possible after indication.

It is believed this invention is new as it combines:

In an automatic, shifting shuttle box loom with a fixed magazine having two or more stacks of bobbins which connect with a bobbin holding device, such as giveways, and with a transfer hammer including a movable dog which can be so set as to be engaged by a hunter on the lay; a feeler, in any position for indication, which feeler is so connected with controls for the dog as to move it into transferring or set position; and means so associated with or timed with the transfer hammer as to operate or release bobbin releasin mechanism for allowing or causing a bobbin to move from one of the stacks into the giveways after instead of before transfer.

While in the preferred type I show a loom with a fixed magazine and multiple stacks of bobbins together with multiple cell shuttle boxes on each side of the loom, my device can also be used on other looms with similar fixed magazinesbut with multiple cell shuttle boxes on one side only or with single boxes on both sides.

In a general way, the features of my device include a loom of the type specified; suitable bobrelea ing devices, a feeler preferably at the back on the magazine side; connections between the feeler and the transfer hammer, particularly with its dog; and connections, preferably between the transfer hammer and the bobbin releasing devices of such a character, or others so timed with the transfer hammer, that a bobbin is released after transfer instead of before, while the dog and the transfer hammer are set immedi-- ately after indication.

In the drawings:

Fig. 1 is an elevation of part of a stationary magazine wi h parts of the frame and the shuttle boxes viewed from the outer side.

Fig. 2 is a view similar to Fig. 1 but viewed from the inner side.

Fig. 3 is a. diagrammatic front elevation of a loom with which my devices are used with a stationary magazine and with a plurality of boxes on both sides.

Fig. 4 is a diagrammatic fragmentary elevation similar to Fig. 2 but with parts broken away to expose the bobbin cradles, the transfer hammer and the giveways. 2 and a all show what I will call the normal position of the bobbins in the magazine and in the giveways.

Fig. 5 is an elevation as from the right of Fig. 4 showing a connection between the transfer hammer and the revoluble shaft with its fingers which operate the slides.

Fig. 6 is a diagrammatic representation of an electric feeler, solenoid and their electric connections, such as I find convenient to use.

Fig. 6A is an isometric view of the shaft which carries the fingers for moving the cradle slides.

Figs. 7 and 8 show the normal positions of the transfer hammer and fingers; Figs. 9 and 10 show the position of the parts on transfer and Figs. 11 and 12 show the position of the parts immediately after transfer when the transfer hammer has returned to its normal position such as shown in Figs. 7 and 8 but a spring slide 2!, Fig. 11, and its cradle have not yet returned to the bobbin receiving position.

Fig. 13 is a detail of a bobbin in a cradle with the cradle moving pin and slot and Fig. 14 shows the same parts with the cradle turned to drop a bobbin.

Fig. 15 is a detail of the preferred arrangement of transfer arm, transfer dog and latch.

Fig. 16 is a view as from the inside, like Fig. l, with parts broken away to show the connection to the thread cutter, the position of the bobbins in. the cradles and the position of the transfer dog after it has been released by the action of the feeler.

Fig. 17 is a view similar to Fig. 16, showing the position of the parts as transfer is accomplished with the lay, its hunter and the transfer dog all in the extreme forward position and the pin of the latch for the dog position to hold the latch and allow the dog to separate from it on the back movement of the lay and the upward movement of the transfer hammer, as shown by the dotted lines.

Fig. 18 is a detail of the dog latch locking pin and solenoid construction.

Fig. 19 is a plan view of another kind of a dog connected with a solenoid and Fig. is a side elevation of the same.

Figs. 20 and 21 are details of the jaw operating devices of the preferred construction of the thread cutter.

Fig. 23 is a diagram of the feeler and electrical connection to a solenoid as applied in a different embodiment from that shown in Figs. 1 to 22.

Fig. 24 is a front elevation and Fig. 26 is a fragmentary side elevation of the arrangement of parts to cooperate with those shown in Fig. 23.

Fig. 25 is a detail of a pin and Fig. 27 is a detail of the revoluble shaft and slide moving fingers with their operating parts and connections.

Fig. 27A is an isometric view of the parts shown in Fig. 27.

Fig. 28 is a. front elevation similar to Fig. 3 of a loom with a stationary magazine but with single shuttle boxes only on each side.

Fig. 29 is a view similar to Fig. 4 of the arrang ment of parts for the construction shown in Fig. 29 and in Figs. 28, 30, 31, and 32.

Figs. 30, 31 and 32 are details to show the construction of the devices by which the cradle slides are operated in the construction shown in Figs. 28 and 29.

Fig. 30 is a detail of working parts as from the right of Fig. 29, the finger carriage moving devices being omitted.

Fig. 31 is a side elevation of two cradle slides each having two noses, one slide being up and the other down.

Fig. 32 is a detail of the connecting devices between the chopper arm and the carriage for the slide operating fingers.

In the drawings, L indicates the frame of a bobbin changing loom in which there are a plurality of shuttles P, P, and vertically shifting shuttle boxes B and B, each with a plurality of cells II and Ill.

M is a magazine which is shown as having four stacks I, 2, 3, 4, of bobbins A, A. There is a bunter on the lay 6 and a spring pressed transfer hammer H which has two arms I2 and I3 one carrying the usual head I4 and the other having pivoted to it a dog I5. The magazine, transfer hammer, bunter and weft feeler F are all on the same side of the loom.

R indicates the bobbin releasing mechanism for releasing one of the reserve bobbins such as A from the bottom of a stack in the magazine M and includes, under each stack, a turnable cradle 2I| a slide 2| which can tip the cradle ninety degrees and is normally held up by a spring 22 thus holding the cradle in position where it always holds one of the bobbins A.

Each slide bar 2| shown, instead of having two noses as in Ryon, has a single nose 23. When one of these noses 23 is engaged by one of the fingers such as 30, which is one of a number carried radially by a revoluble shaft 3|, Fig. 6A, when shaft 3| turns, that finger pushes down on that nose and its slide bar until its cradle tips and spills out the bobbin in that cradle. After that happens, that finger slips off that nose as shown in Fig. 11 allowing the slide spring 22 to lift the slide bar 2| and to turn up that cradle 20 to receive another bobbin from that stack. At the same time another finger 30 comes into position just over the nose of another slide.

As shown, the fingers 30 are so positioned around the shaft 3| that after one has moved i a nose and slide and allowed one of its bobbins to be released, another finger has moved around to be in the right position above another nose on another slide whereby the bobbins from successive stacks are dropped into the giveways 24,

24, and the stacks are equally exhausted. No color control shaft is necessary.

F is a feeler, Fig. 6, of the electrical type shown as positioned at the back on the magazine side and having a contact switch 40 which, when its finger 4'! slips on an almost exhausted bobbin, closes a circuit through the wires 4| and 42 from a source of electricity such as a battery 43 through a solenoid S. This solenoid S has a core 44 connected by a wire 45 to a pin 46 of spring pressed latch N which is so connected to the dog I5 pivoted at I6 that when the pin is pulled out by the action of the solenoid, gravity drops the latch N and dog I5 down as shown by the dotted lines in Figs. 8 and 15 in position to be engaged by the hunter 5 when the lay moves forward.

The operation is shown in Figs. 16 to 18. Starting with a bobbin A in the giveways, when the feeler indicates near exhaustion, the solenoid pulls the pin 45 of the latch N allowing gravity to drop the dog I5 in front of the hunter 5 so that when the hunter goes forward as shown in Figs. 8, 10, and 17, a bobbin is forced into the shuttle. This forward motion of the hunter and the pivotal motion of the arm I2 and the dog I5 also move back the latch N until the pin 46 is forced by its spring 47 out and behind the arm I2 thus locking the dog away from the hunter until the next indication. lfhe closing of the electric circuit by the feeler is instantaneous and the moment the pin 46 is pulled out, the dog is dropped down into position by gravity. A spring might be used to assist gravity. Latch N also drops.

The connections between the transfer hammer H and the bobbin releasing mechanism R including the fingers 30, slide bars 2| and cradles 20, are shown as a ratchet wheel 50 carried by shaft 3| and engaged by a pawl 52 on a rod 53 which is pivotally connected to the hammer head arm I3 of the transfer hammer H.

As the bunter and dog move forward, hammer head arm l3 moves down, pulling rod 53 and pawl 52 down or back from X to the position Y shown in dotted lines Fig. 11 and full lines in Fig. 9. This does not move the ratchet wheel 50 nor the fingers 30.

As the hunter recedes, the spring 9 of hammer H moves the transfer hammer and particularly its hammer arm I3 and hammer head I4 upward to its usual position as shown in Figs. 8 and 12 thus moving the pawl 52 against a notch Y in the ratchet 50 and with them the shaft 3| and a finger 30 with one of the noses 23 on one of the slide bars 2 I.

This movement of slide bar 2| rocks its cradle 2|! and drops its bobbin into the giveways and when the tip of finger 30 slips off of a nose 23, as shown in Fig. 11, thus releasing the slide bar 2| its spring 22 pulls it up, as shown by the dotted lines, and turns its cradle 20 to bobbin receiving position to receive another bobbin. See Fig. 13.

Y and X indicate the teeth as engaged by pawl 52.

As the transfer hammer H with its spring 9 is pivoted at on the frame, while the dog I5 is pivoted on the dog arm I2 at I6 and the hunter 5 moves forward with the lay on a flat arc and pushes the dog with it as shown in Figs. 8 and 17, I find it desirable to have an elastic connection between dog I5 and latch N to allow the dog to move on a flat arc and the latch to move back or to wait so that pin 45 can reset it.

The dog and latch are both pivoted at IE on dog arm I2 and they are held together by a spring ||8 which can yield but tends to pull them together. Figs. 16, 17, 18.

Latch N has one arm I20 through which is hole III for pin 45 and arm H9 at the end of which is a cam follower II! which extends out so as to engage a fixed cam II-E and to ride up on it thus moving the other arm |2fi with the pin 46 so that the spring 41 for pin 45 can snap it back of the dog arm i2 when that arm moves forward on transfer. Thereby this latch I? through the spring H8 allows the dog to follow the hunter hack. separating from the arm H9 as shown in Fig. 17. but snapping up into position when the hunter leaves the dog. The dog and latch N will again drop by gravity down into transferring position when the pin 45% is again pulled out by the solenoid 5, as shown by full lines in Figs. 10, 16 and 17.

Figs. 8, 12, 15 and the dotted lines in Fig. 16

show the up or normal position of the dog I and latch N when held up by pin 46 and spring H8.

The combination of a feeler of the electrically operable type, solenoid and latch pin on the dog are the subject of a copending application of mine, Serial Number 607,816, filed July 30, 1945.

In l9 and 22, I show another arrangement for setting the dog of the transfer hammer. In this case is a transfer hammer arm to which the dog El is pivoted at 52, this being a horizontal pivot. The front part 53 of the dog is pivoted on a vertical pivot 34 and there is a returning spring 65 against which a solenoid 66 pulls at the right time to bring this part of the dog in front of the hunter 57. See dotted lines Fig. 19.

The horizontally movable dog which is operable by a solenoid is the subject of a copending application of mine, Serial Number 719,877, filed January 2, 1947.

In Figs. 2, 16, 20, and 21, I show a thread cuter IS of a known type pivoted at 'II with a lower aw I2 pivoted at I4 and a fixed upper jaw 73 and having pin 75 which rides over the top face 1 an arm of a weighted pivoted lever 77 when the Cl. ter is moved backward by the action of the rod extending from the arm 19 carried by the shaft as which also carries the transfer hammer H and its spring 9. As the transfer hammer head goes down, the cutter moves toward the tl'rreau between the selvage and the shuttle, the pin 75 riding over the top face 76 of the weighted lever 7'! thereby opens the jaws and allows them to close and sever the thread at the right time.

With the opposite movement of the transfer hammer, pin :5 strikes the top of the weighted lever Tl pushes back and then goes over it each to its normal position while the weighted lever 2? drops to its normal position between the pin and the thread.

20 shows the normal position. As pin I5 moves forward in the direction of the arrow jaw closes after pin I5 leaves I6. Fig. 21 shows the resetting action.

slides each with a single nose and a returno l g associated with a revoluble finger 1ft carrying a plurality of fingers as shown in x s. 5, 6, 7, 3, 9, 10, together with a ratchet carried by the slide finger shaft and a pawl.

Instead of using a solenoid to pull on a pin 46 associated v ith the dog to allow the dog to drop, I show a so.enoid 2! with a core 9| so connected with push 92, similar to the usual chopper t that it is normally out of the Way of er and does not get in its way until a feeler F on the front or back energizes the solenoid so to push the pin 92 under chopper arm 93. This pin 92 may have a slight notch I92 so that when it is pushed in and the chopper comes cown on the pin will stay in place until the cho, per is moved up away from it whereupon 96 will withdraw it and allow the chopper act in its usual manner.

The arr.- T

aof chopper C is caused to reciprocate a3 a cam i connecting rod 91 and a specially cut l en the pin $32 is pushed in place, the chopper 92 is moved down beyond its normal path. This chopper arm 99 carries a pawl 52 which engages ratchet 50 on slide finger shaft 3!. It is therefore caused to move by the chopper 0, not by the transfer hammer. Normally arm 99 and pawl 52 are not moved by cam 96 but chopper arm moves up and down past pin 92 moving on the pivot 98 shown in Fig. 24. The

In the construction shown in Figs. 23 to 27A, I i I:

chopper action is substantially the same as described In the patent to Ryon No. 1,030,748, and shown in his Figs. 8, 9, and 10 and the loom may have shifting shuttle boxes on one side and a single box under the magazine. On indication when arm 99 moves down beyond its usual path, it moves pawl 52 to the dotted line position shown in Fig. 27 in. position to move the ratchet 50 one tooth on the up stroke. This downward movement also operating on one end of rocker arm I05 lifts the rod I00 which extends down under the dog IIII thus lifting it into transferring position. In this construction, the dog is normally down below the hunter I02 and must be lifted in order to engage it. See Fig. 26.

After transfer. the transfer spring 9 returns the transfer hammer H to normal position, the dog following the hunter until the hunter clears it, when the dog I 0| drops to its normal position. The chopper cam 96 is so cut that right after transfer, it releases the chopper C from the pin 92 which is withdrawn by its spring 94, when the chopper rod 91 is pushed up rod IDIJ is dropped from under IIII.

This upward movement causes pawl 52 to move ratchet 56 one tooth and causes a finger 30 to move a nose 23 and a slide 2I down, thus emptying a cradle and spilling out a bobbin. See Fig. 27. The finger 30 continues to move, Fig. 27, until it slips off its nose 23 when the slide spring 22 returns its slide 2| and cradle 25 to their normal position. The normal condition, in this and the previous arrangement, is that there is most of the time a bobbin in the giveways and one in each cradle.

With a revoluble shaft an spaced fingers, the fingers as they come around, each engages a different slide nose and the magazine staclm are therefore emptied equally and successively.

Another modification or variation of my device is shown in Figs. 28 to 32. 1

In this construction, there is only a single shuttle S and neither shuttle box shifts.

In these views, M represents a magazine of the same well known type shown in the other views. It is shown as having four stacks of bobbins wita cradle to receive and discharge at the bottom of each stack, each cradle being moved by a slide such as I5I, I52, I53, I54, Fig. 29. Each of these slides instead of having only one nose has two noses 82 and 83. A carriage I34 turnable and slidable with a guide shaft 84 which is located in about the same place as the sliding shaft of color control of a well known type and carries two fingers. each indicated by 85. Carriage I84 is provided with a feather or rib I35. See 32.

As shown in Fig. 31, each slide such as I5I, I52, I53, IE4 is provided with a spring plunger 182 which engages a V notch IE3 or liil to hold its slide in the receiving or discharging position in a well known manner and as shown in Ryon Patent No. 1,030,748, Figs. 8, 9,. 10.

The chopper action shown. in Fig. 3D is about the same as that in Fig. 24 and is caused to operate on indication by a solenoid which pushes a pin 92 under the arm 93,

The rod 99 has one long arm I55 with a slot [56 into which extends a pin I51 on one arm 81 of a bell crank lever I53 pivoted at I59, with another arm 88 carrying a doglifting rod IE2.

The other arm I 45 forming part of rod a horizontal slot I49, Fig. 32, which engages horizontal rib I of carriage I8 which is a. ially slidable with the guide shaft 84.

This construction is similar to that shown by 9. Ryon in his Figs. 2 and 3 at 42, 43, 44. Other parts of this construction are the same or similar to the Ryon construction.

On indication, the chopper rod 99 is pulled well down, by cam I96, a finger 85 engages a nose 82 lifting the one empty cradle to receive a bobbin and, through arm I43, lever I59 and dog lifter I60, lifts the dog I47 into transferring position. Spring plunger I82 enters notch I83 and holds this slide and cradle in bobbin receiving and holding position as in Ryon.

To bring different fingers, such as 85, successively in between the noses 82 and 83 of the various slides, I use a connecting rod I40 which is pivoted at one end to the hammer arm of the transfer hammer arm I3 and at the other end to a rocking lever MI which carries at its other end a pawl $8 in position to move the ratchet 81 which carries a specially cut cam 8c in a step by step movement.

On transfer, rod Itii is pulled down and this causes pawl 88 to move 81 one tooth corresponding with one of the faces on the cam 86. These faces successively move against a cam follower 286 on th end of carriage I84 and cause it with its fingers 85 to move against a compression spring 285, This cam 85 can b cut in various ways but preferably it is so cut that the faces present themselves and the corresponding fingers present themselves in an order such as 1, 2, 3, 4-4, 3, 2, 11, 2, 3, 4.

The timing is about as follows:

Starting with slides I5I, I52, and I53 each up and each with a bobbin in its cradle and a bobbin in the giveways and with the slide I54 down and its cradle empty, on indication it is lifted by the chopper action described to receive a bobbin and is held in place by its plunger spring I82. It remains in that position but the finger which moved it is moved horizontally away by the action of cam 86 on the carriage I84 during transfer and this same movement brings another finger 85 between the noses of another slide such as I52. That slide I52 together with IEI, I53 and I54 now has a bobbin in its cradle so that for a time each of the four cradles carries a bobbin. On transfer after the hammer H makes this shift of the carriage and its fingers, the parts are so timed that the chopper cam I95 immediately thereafter will move rod 99 up and finger 85 and nose 83 down discharging the cradle of I52 and at the same time through the arm I48, lever I58 and rod I60, the dog is allowed to drop to inactive position.

I have described my preferred construction with a revolving shaft carrying fingers which successively move cradle slides, each slide with a, single nose. The shaft may be operated from an arm of the transfer hammer, by a pawl and ratchet or through the medium of a chopper of the well known Ryon type. i This revoluble shaft, with fingers or paddle wheels can be turned so that each finger will move a slide with a single nose and let go, when a, returning spring will return the slide to its original position.v

However, the desired sequence of operations can also be accomplished by other means, such as a cam, a chopper and connections to move cradle slides each with two noses, as also described herein, and there are other means of accomplishing the desired result which is after transfer from the giveways into the shuttle of a full to replace an empty bobbin which it pushes out, to release a bobbin from one of the stacks in the magazine into the giveway indication. i

In every case the construction is limited to one in which there is a stationary magazine with more than one stack of bobbins. The feeler can b in various places and may be of the electric type or the mechanical type. With shifting shuttle boxes under the magazine, the feeler can be at the back to feel a bobbin in a shuttle in a box which has stopped shifting up and down or the feeler could b at the front and move with the top box.

Where there are no shifting shuttle boxes but a singl shuttle and a magazine, the feeler ordinarily would be at the front on the off magazine side but the location of the feeler will depend largely on whether or not there are shifting boxes on one or both sides and whether or not the cloth to be made is of the pick and pick type or the two and two type where the same shuttle goes over and back.

The main feature is that no allowance needs to be made for the time interval between when the bobbin starts to leave a cradle under a stack in a magazine and its coming to rest in the giveways as this is done after a previous bobbin has been driven out of the giveways into the waiting shuttle but before the next indication.

Normally all the cradles are full and there is a bobbin in the giveways. On weft feeler indication, the dog is set, Fig, 8, dotted lines, and Fig. 16, full lines, and after transfer a bobbin drops into the giveways from a cradle and then that cradle is refilled.

I claim:

1. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on both sides, a reserve bobbin magazine holding two or more vertical stacks of bobbins, a hunter on the lay and a spring pressed transfer hammer including a head and a dog, giveways to receive a bobbin from a stack and to hold it in position under the hammer head, and a weft feeler at the back all at the same side of the loom; bobbin releasing mechanism for releasing a reserve bobbin from said magazine stacks to move into the giveways for transfer in to the upper box on the magazine side of said shifting shuttle boxes, including a, turnable cradle at the bottom of each stack, a spring carried slide bar having a nose for turning each cradle, a plurality of fingers radially carried by a revoluble shaft, each finger being opposite a nose, to engage each nose for moving the slide against its spring and to turn its cradle; said weft feeler to detect the weft in the upper shuttle box on the magazine side; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter; and connections between the transfer hammer and the bobbin releasing mechanism including a ratchet carried by the revoluble shaft, an operating pawl therefor and a rod from the pawl to the transfer hammer to release a bobbin after transfer from a cradle into the giveways.

2. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on both sides, a reserve bobbin magazine holding two or more vertical stacks of bobbins, a hunter on the lay and a spring pressed transfer hammer including a head and a do giveways to receive a bobbin from a stack and to hold it in position under the hammer head and a weft feeler all at the same side of the loom; bobbin rebefore the next leasing mechanism for releasing a reserve bobbin from said magazine stacks to move into the giveways for transfer into the upper box on the magazine side of said shifting shuttle boxes, including a turnable cradle at the bottom of each stack, a spring carried slide bar having a nose for turning each cradle, a plurality of fingers radially carried by a revoluble shaft, each finger being opposite a nose, to engage each nose for moving the slide against its spring and to turn its cradle; said weft feeler to detect the weft in the upper shuttle box on the magazine side; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter; and connections between the weft feeler controlled mechanism and the bobbin releasing mechanism including a ratchet carried by the revoluble shaft, an operating pawl therefor and a rod from the pawl to the weft feeler controlled mechanism to release a bobbin after transfer from a cradle into the giveways.

3. In abobbin changing loom using a plurality of shuttles and having vertically shifting sh e boxes on both sides, a stationary reserve bobbin magazine holding two or more vertical staclcs of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a bunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler at the back, all at the same side of the loom; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the upper box on the magazine side of said shifting shuttle boxes; said weft feeler to detect the weft in the upper shuttle box on the magazine side; mechanism, controlled and se-u in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter; and connections between the weft feeler controlled mechanism and the bobbin releasing mechanism including a. ratchet, an operating pawl therefor and a rod from the pawl to the Weft feeler controlled mechanism to release another reserve bobbin after transfer from the magazine into the giveways in position to be transferred.

4. In a bobbin changing loom using a plurality of shuttles and having vertically shiftin shuttle boxes on one side and on the other side a single box, a stationary reserve bobbin magazine on the single box side holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a bunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the single box; said weft feeler to detect the weft in one of the shifting shuttle boxes; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter; and connections between the transfer hammer and the bobbin releasing mechanism including a ratchet, an operating pawl therefor and a rod from the pawl to the transfer hammer to release another reserve bobbin from the magazine into the giveways after transfer in position to be transferred.

5. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on one side and on the other side a single box, astationary reserve bobbin magazine on the single box side holding two or more ver-- Cir tioal stacks of bobbins and having giveways posltioned centrally under the bottoms of the vertical stacks, a bunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into tl e giveways for transfer into the single box; said feeler to detect the weft; mechanism, conr lled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter; and connections between the weft feeler controlled mechanism and the bobbin releasing mechanism to release another reserve bobbin from the magazine to the giveways after transfer in position to be transferred.

6. In a weft replenishing loom having a lay, upper and lower vertically shiftable shuttle boxes and a stationary magazine provided with a plurality of vertical stacks of reserve bobbins, all at one end, a transfer hammer at the magazine end of the loom, a lay operated dog for said hammer normally out of the lay path, means operable by a weft feeler for causing the dog to be in the path of the lay, means for releasing bobbins from the magazine and initiating movement of said released bobbin toward transfer position under the transfer hammer, operating means for said bobbin releasing means to release a bobbin from any of said stacks, said weft feeler to detect the weft in the top shuttle box on the magazine side of the loom, together with other means connected with the bobbin releasing means to time it for releasing another reserve bobbin from the magazine to transfer position after the lay has engaged the dog and has transferred a previous bobbin and before the next indication.

7. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on one side, a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a bunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the top shuttle box; said weft feeler to detect the weft in the top shuttle box; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter and to initiate action to release another reserve bobbin from the magazine into the giveways after transfer in position to be transferred.

8. In a bobbin changing loom having a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a shuttle box under the giveways, a bunter on the lay and a transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasin a reserve bobbin from said magazine into the glveways for transfer into the box; said weft feeler to detect the weft in the shuttle box; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter and to initiate action to release another reserve bobbin from the magazine into the giveways after transfer and before the next indication in position to be transferred.

9. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on both sides, a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a bunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler at the back, all at the same side of the loom; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the upper box on the magazine side of said shifting shuttle boxes; said weft feeler to detect the weft in the upper shuttle box on the magazine side; mechanism, controlled and set in action by the weft feeler when Weft exhaustion is indicated thereby, to position the dog in front of the hunter; and connections between the weft feeler controlled mechanism and the bobbin releasing mechanism to release another reserve bobbin after transfer from the magazine into the giveways and before the next indication in position to be transferred.

10. In a bobbin changing loom usuing a plurality of shuttles and having vertically shifting shuttle boxes on both sides, a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical tacks, a hunter on the lay and a spring pressed transfor hammer including a dog, and a weft feeler: bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the top shuttle box; said weft feeler to detect the weft in the top shuttle box; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter and to initiate action to release another reserve bobbin from the magazine into the giveways after transfer of a previous one and before the next indication and in position to be transferred.

11. In a bobbin changing loom using a plurality of shuttles and having vertically shifting shuttle boxes on both sides, a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottoms of the vertical stacks, a hunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into the top shuttle box; said weft feeler to detect the weft in one of the shuttle boxes; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter and to initiate action to release another reserve bobbin from the magazine into the giveways after transfer of a previous one and before the next indication and in position to be transferred.

12. In a bobbin changing loom using a shuttle and having a shuttle box on both sides, a stationary reserve bobbin magazine holding two or more vertical stacks of bobbins and having giveways positioned centrally under the bottom of the vertical stacks, a hunter on the lay and a spring pressed transfer hammer including a dog, and a weft feeler; bobbin releasing mechanism for releasing a reserve bobbin from said magazine into the giveways for transfer into a shuttle box; said weft feeler to detect the Weft in one of the shuttle boxes; mechanism, controlled and set in action by the weft feeler when weft exhaustion is indicated thereby, to position the dog in front of the bunter, and to initiate action to release another reserve bobbin from the magazine into the giveways after transfer of a previous one and before the next indication and in position to be transferred.

JOSEPH STUER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,259,843 Stuer Oct. 21, 1941 1,739,225 Gordon Dec. 10, 1929 2,312,170 Jennings Feb. 23, 1943 2,065,776 Wakefield Dec. 29, 1936 2,207,078 Stuer July 9, 1940 2,264,462 Stuer Dec. 2, 1941 2,353,323 Stuer July 11, 1944 2,360,529 Turner Oct. 17, 1944 FOREIGN PATENTS Number Country Date 589,943 German Dec. 20, 1933 

